136217 has 2 divisors, whose sum is σ = 136218. Its totient is φ = 136216.

The previous prime is 136207. The next prime is 136223. The reversal of 136217 is 712631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132496 + 3721 = 364^2 + 61^2 .

It is an emirp because it is prime and its reverse (712631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136217 - 2¹⁰ = 135193 is a prime.

It is a Chen prime.

It is equal to p₁₂₆₈₃ and since 136217 and 12683 have the same sum of digits, it is a Honaker prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136217.

It is not a weakly prime, because it can be changed into another prime (136207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68108 + 68109.

It is an arithmetic number, because the mean of its divisors is an integer number (68109).

2¹³⁶²¹⁷ is an apocalyptic number.

It is an amenable number.

136217 is a deficient number, since it is larger than the sum of its proper divisors (1).

136217 is an equidigital number, since it uses as much as digits as its factorization.

136217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 20.

The square root of 136217 is about 369.0758729584. The cubic root of 136217 is about 51.4529686566.

Adding to 136217 its reverse (712631), we get a palindrome (848848).

It can be divided in two parts, 136 and 217, that added together give a palindrome (353).

The spelling of 136217 in words is "one hundred thirty-six thousand, two hundred seventeen".